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4 years ago

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Amy has a total of 560 marbles, She has five times as many small marbles as medium marbles. The number of large marbles is two m

ore than three times the number of medium marbles. How many of each size does she have?

1 answer:

Klio2033 [76]4 years ago

7 0

I am sorry if answer is wrong,reply me

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Answer:

6 8 10 12 14 16 18 20 22

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2 years ago

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Answer:

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3 years ago

Verify:<br>cos(2A)=(cotA-tanA)/cscAsecA

kolbaska11 [484]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

cot A = $\frac{cosA}{sinA}$ , tanA = $\frac{sinA}{cosA}$ , cscA = $\frac{1}{sinA}$ , secA = $\frac{1}{cosA}$

Consider the right side

$\frac{cotA-tanA}{cscAsecA}$

= $\frac{\frac{cosA}{sinA}-\frac{sinA}{cosA} }{\frac{1}{sinA}.\frac{1}{cosA} }$

= $\frac{\frac{cos^2A-sin^2A}{sinAcosA} }{\frac{1}{sinAcosA} }$

= $\frac{cos^2A-sin^2A}{sinAcosA}$ × sinAcosA ( cancel sinAcosA )

= cos²A - sin²A

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= left side ⇒ verified

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3 years ago